Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2019   22:34:17   (   0.02,-137.19) (  -0.08,-137.63)   50.45                80
 07/03/2019   22:18:13   (   0.01,-137.18) (   0.92,-133.10)  465.26                80
 07/05/2019   10:37:21   (  -0.01,-137.18) (   0.25,-138.37)  134.94                80
 07/06/2019   10:21:16   (  -0.01,-137.17) (  -0.76,-133.84)  380.43                80
 07/07/2019   22:40:33   (   0.01,-137.14) (  -0.46,-139.13)  227.77                80
 07/08/2019   22:24:28   (   0.00,-137.13) (   0.55,-134.60)  287.47                80
 07/10/2019   10:43:36   (  -0.01,-137.13) (   0.62,-139.87)  313.38                80
 07/11/2019   10:27:32   (  -0.00,-137.11) (  -0.38,-135.34)  201.40                80
 07/12/2019   22:46:49   (   0.01,-137.07) (  -0.77,-140.65)  408.08                80
 07/13/2019   22:30:45   (   0.01,-137.05) (   0.24,-136.12)  106.41                80
 07/15/2019   10:49:53   (  -0.02,-137.04) (   0.93,-141.39)  495.45                80